| 30401 | Three Sisters Petroleum, Inc. | Oil City, LA 71061 | Oil & Gas Operator | Jan 2025 |
| 30402 | Three Span Oil & Gas, Inc. | Midland, TX 79710 | Oil & Gas Operator | Feb 2026 |
| 30403 | Three States Natural Gas | | Oil & Gas Operator | Mar 1976 |
| 30404 | Three Summits Operating LLC | Grapevine, TX 76051 | Oil & Gas Operator | Feb 2026 |
| 30405 | Three-B Oil Company, The | Monahans, TX 79756 | Oil & Gas Operator | Feb 2026 |
| 30406 | Three-C Oil And Gas | Hebbronville, TX 78361 | Oil & Gas Operator | Feb 2026 |
| 30407 | Three-C Production Company | Temple, TX 76502 | Oil Operator | Feb 2026 |
| 30408 | Three-N-One | | Oil Operator | Oct 2020 |
| 30409 | Threet David Allen | Sand Springs, OK 74063-4035 | Oil & Gas Operator | Nov 2025 |
| 30410 | Threeway Drilling Company | Midland, TX 79701 | Oil & Gas Operator | Jun 2025 |
| 30411 | Thresher Energy, Inc. | Houston, TX 77060 | Oil & Gas Operator | Feb 2026 |
| 30412 | Threshold Development Company | Fort Worth, TX 76109 | Oil & Gas Operator | Aug 2016 |
| 30413 | Threshold Exploration, Inc. | College Sta, TX 77842 | Oil & Gas Operator | Oct 2015 |
| 30414 | Thriftway Company | Farmington, NM 87401 | Oil & Gas Operator | Dec 1996 |
| 30415 | Thriftway Marketing Corp | Farmington, NM 87401 | Gas Operator | Apr 2000 |
| 30416 | Thrifty Well Service | Rice, TX 75155 | Oil & Gas Operator | Jun 2009 |
| 30417 | Throckmorton Oil, Inc. | Throckmorton, TX 76483 | Oil & Gas Operator | Mar 2008 |
| 30418 | Throne Delaware Resources, LLC | McKinney, TX 75072 | Oil & Gas Operator | Dec 2021 |
| 30419 | Throne Petroleum Resources LLC | Houston, TX 77006 | Oil & Gas Operator | Aug 2021 |
| 30420 | Thropp, Kevin F D/B/A Marilyns Motors | | Oil & Gas Operator | Dec 2020 |
| 30421 | THT Covenant Holdings, LLC | Henrietta, TX 76365 | Oil Operator | Feb 2026 |
| 30422 | THT Operating Company | | Oil & Gas Operator | Jul 1990 |
| 30423 | Thums Long Beach Co. | | Oil & Gas Operator | Dec 2025 |
| 30424 | Thunder Basin Resources LLC | Denver, CO 80203 | Oil & Gas Operator | Jul 2023 |
| 30425 | Thunder Corp | Marietta, OH 45750 | Oil & Gas Operator | Dec 2014 |
| 30426 | Thunder Oil & Gas, LLC | Ardmore, OK 73402 | Oil & Gas Operator | Dec 2025 |
| 30427 | Thunder Oil, LLC | | Oil & Gas Operator | Oct 1998 |
| 30428 | Thunder Petroleum LLC | Owasso, OK 74055-1563 | Oil Operator | Aug 2025 |
| 30429 | Thunder Resources LLC | Graham, TX 76450 | Oil Operator | Feb 2026 |
| 30430 | Thunderbird (Texas) Resources LP | Edmond, OK 73025 | Oil & Gas Operator | Apr 2019 |
| 30431 | Thunderbird Dril | | Oil & Gas Operator | Nov 1995 |
| 30432 | Thunderbird Drilling, Inc. | Wichita, KS 67207 | Oil Operator | Oct 2008 |
| 30433 | Thunderbird Energy, Inc. | Norman, OK 73069 | Oil & Gas Operator | Feb 2026 |
| 30434 | Thunderbird Oil | | Oil Operator | Oct 1991 |
| 30435 | Thunderbird Operating, L.L.C. | Graham, TX 76450 | Oil & Gas Operator | Feb 2026 |
| 30436 | Thunderbird Resources LP | | Oil & Gas Operator | Apr 2019 |
| 30437 | Thunderbolt Construction Corp. | Louisburg, KS 66053 | Oil Operator | Oct 2024 |
| 30438 | Thunderbolt Oil & Gas, Inc. | Abilene, TX 79605 | Oil & Gas Operator | Feb 2004 |
| 30439 | Thunderbolt Petroleum Co. LLC | Midland, TX 79702 | Oil & Gas Operator | Apr 2011 |
| 30440 | Thunderbolt Petroleum, LLC | Midland, TX 79702 | Oil & Gas Operator | Sep 2013 |
| 30441 | Thunderstone Exploration, Inc. | | Oil & Gas Operator | Oct 2006 |
| 30442 | Thurber, Gueydon | Horseshoe Bay, TX 78657 | Oil Operator | May 2001 |
| 30443 | Thurner Energy Corporation | | Oil & Gas Operator | Dec 2001 |
| 30444 | Thurston Energy Operating | Vernal, UT 84078 | Oil & Gas Operator | Dec 2015 |
| 30445 | Thurston Texas Operating Co LLC | Dallas, TX 75219 | Oil Operator | Feb 2026 |
| 30446 | Tiara Resources, Inc. | Fort Worth, TX 76179 | Oil & Gas Operator | Apr 1998 |
| 30447 | Tiburon Oil & Gas, Inc. | Midland, TX 79701 | Oil & Gas Operator | Aug 2000 |
| 30448 | Tice, Robin Alejandrina | Gordon, TX 76453 | Gas Operator | Feb 2026 |
| 30449 | Tickel Jim & Cindy | Blackwell, OK 74631-6015 | Oil Operator | Jan 2013 |
| 30450 | Ticony Inc | | Oil & Gas Operator | Dec 1989 |
| 30451 | Tidal Petroleum, Inc. | Schertz, TX 78154 | Oil & Gas Operator | Feb 2026 |
| 30452 | Tidal Wave Energy, Inc. | New Castle, PA 16105 | Oil & Gas Operator | Jun 2022 |
| 30453 | Tidd, Frankie | Neosho Falls, KS 66758 | Oil Operator | Nov 1996 |
| 30454 | Tidd, Gary D. | Piqua, KS 66761 | Oil Operator | May 2016 |
| 30455 | Tide Energy, Inc. | Dallas, TX 75206 | Gas Operator | Oct 1994 |
| 30456 | Tide West Oil Company | Tulsa, OK 74136 | Oil & Gas Operator | Mar 2021 |
| 30457 | Tideland Industries, Inc. | | Oil & Gas Operator | Dec 1989 |
| 30458 | Tidelands Gas Corporation | Flower Mound, TX 75028 | Oil & Gas Operator | Sep 2000 |
| 30459 | Tidelands Oil Corporation | Crystal City, TX 78839 | Oil & Gas Operator | Aug 2003 |
| 30460 | Tidelands Oil Production Co. | | Oil & Gas Operator | Dec 2025 |
| 30461 | Tidelands Resources, Inc. | | Gas Operator | Oct 1990 |
| 30462 | Tidemark Exploration | Tulsa, OK 74170 | Oil & Gas Operator | May 2005 |
| 30463 | Tidemark Exploration Inc | Tulsa, OK 74120 | Oil & Gas Operator | Apr 2019 |
| 30464 | Tidemark Petroleum, Inc. | San Antonio, TX 78209 | Oil & Gas Operator | Jul 2002 |
| 30465 | Tidewater Co | | Oil & Gas Operator | Sep 1967 |
| 30466 | Tidewater Minerals Corporation | Orange Grove, TX 78372 | Oil & Gas Operator | Feb 2026 |
| 30467 | Tidewater Operating Co Inc | Tulsa, OK 74136-6308 | Oil & Gas Operator | Nov 2025 |
| 30468 | Tidewater Resources Corporation | Memphis, TN 38138 | Gas Operator | Feb 2025 |
| 30469 | Tideway Oil Programs, Inc. | | Oil & Gas Operator | Oct 1980 |
| 30470 | Tidlow | Santa Fe, NM 87508 | Oil & Gas Operator | Dec 2007 |
| 30471 | Tidmore, Ann | Albany, TX 76430 | Oil & Gas Operator | Feb 2026 |
| 30472 | Tidwell Oil LLC | Roff, OK 74865 | Oil Operator | Feb 2022 |
| 30473 | Tidwell Production Company | Sonora, TX 76950 | Oil & Gas Operator | Feb 2026 |
| 30474 | Tierra Mineral Development, L.C. | Dallas, TX 75244 | Oil & Gas Operator | Oct 1994 |
| 30475 | Tierra Petroleum Corp. | | Oil & Gas Operator | Jun 1987 |
| 30476 | Tiffany Gas Co | Farmington, NM 87499 | Oil Operator | Jan 2010 |
| 30477 | Tigco Oil & Gas Co., Inc. | | Oil & Gas Operator | Nov 2014 |
| 30478 | Tiger Development LLC | | Oil Operator | Nov 2016 |
| 30479 | Tiger Energy Operating, LLC | Los Angeles, CA 90025 | Oil & Gas Operator | Jan 2026 |
| 30480 | Tiger Eye Resources LLC | Hockley, TX 77447-6911 | Oil Operator | Oct 2012 |
| 30481 | Tiger Mountain Gas & Oil | Oklahoma City, OK 73118 | Gas Operator | Sep 1999 |
| 30482 | Tiger Oil Company | Dallas, TX 75221 | Oil & Gas Operator | May 2007 |
| 30483 | Tiger Oil International, Inc | | Oil & Gas Operator | Dec 1978 |
| 30484 | Tiger Oil, Inc. | Canal Wincheste, OH 43110 | Oil & Gas Operator | Dec 2007 |
| 30485 | Tiger Petroleum | | Oil Operator | Sep 2002 |
| 30486 | Tiger Production Company, LLC | | Oil & Gas Operator | Aug 2021 |
| 30487 | Tiger Resources, L.L.C. | Houston, TX 77070 | Oil & Gas Operator | Feb 2004 |
| 30488 | Tiger Trucks Inc | Seminole, OK 74868 | Oil & Gas Operator | Dec 2025 |
| 30489 | Tigges Oil LLC | | Oil & Gas Operator | Dec 2022 |
| 30490 | Tightrock Enterprises, Inc. | Trinidad, TX 75163 | Oil Operator | Feb 2026 |
| 30491 | Tigner Walker | | Oil & Gas Operator | Dec 2021 |
| 30492 | Tigner Walker Et Al | | Oil & Gas Operator | Aug 2000 |
| 30493 | Tigrett, Robert L. Oil & Gas Co. | Pampa, TX 79065 | Oil & Gas Operator | Dec 2013 |
| 30494 | Tigrett, Terry A. Jr. | | Oil & Gas Operator | Oct 1980 |
| 30495 | Tiki Oil & Gas, LLC | Cisco, TX 76437 | Oil & Gas Operator | Feb 2026 |
| 30496 | Tilden Marcellus LLC | Houston, TX 77024-1358 | Gas Operator | May 2022 |
| 30497 | Tilford Pinson Exploration LLC | Edmond, OK 73003 | Oil & Gas Operator | Nov 2025 |
| 30498 | Tilghman Operating, LLC. | | Oil & Gas Operator | Dec 2025 |
| 30499 | Tilley Matt Dba Tilley Oil Co | Skiatook, OK 74070 | Oil & Gas Operator | Nov 2025 |
| 30500 | Tilley Oil & Gas, Inc. | Oklahoma City, OK 73172 | Oil & Gas Operator | Feb 2026 |